Bonus Quote: "Perhaps it is better to be un-sane and happy, than sane and un-happy." - Arthur C. Clarke

Out of the ~100 more quotes I read by him, here are a few more that stood out:

Interesting: "One of the biggest roles of science fiction is to prepare people to accept the future without pain and to encourage a flexibility of mind. Politicians should read science fiction, not westerns and detective stories."

Enjoyable: Clarke's Law of Revolutionary Ideas: Every revolutionary idea — in science, politics, art, or whatever — seems to evoke three stages of reaction. They may be summed up by the phrases:

(1) "It's completely impossible — don't waste my time";

(2) "It's possible, but it's not worth doing";

(3) "I said it was a good idea all along."

Sounds Good: "I have great faith in optimism as a guiding principle, if only because it offers us the opportunity of creating a self-fulfilling prophecy."